<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        h2{
            background: pink;
        }
        .cat{
            width: 200px;
            margin: 0 auto;
        }
        .header{
            width: 200px;
            height: 200px;
            border-radius: 100px 100px 0 0;
            background: skyblue;
            line-height: 200px;
            text-align: center;
            position: relative;
        }
        .header::before{
            content:"";
            width: 20px;
            height: 20px;
            background: pink;
            position: absolute;
            left: 20px;
            top: 0;
            border-radius:  0 10px 0 10px;
        }
        .header::after{
            content:"";
            width: 20px;
            height: 20px;
            background: pink;
            position: absolute;
            right: 20px;
            top: 0;
            border-radius:  10px 0 10px 0px;
        }
    </style>
</head>
<body>
    <a href="./xiaomiegezi.html">消灭格子</a>
    <a href="./huaban/huaban.html">花瓣</a>
    
    <h2>会笑的猫</h2>
    <div class="cat">
        <div class="header">猫头</div>
    </div>
</body>
</html>